Nice find and decent price. I guess you really need to judge the price. What turns me off is the rust issue. Like I should talk having paid about the same price for a Tre Cime that was in really poor shape, but not the rust level you show.
Here is a picture of the seat cluster clamp as purchased.
[IMG]
P1000940, on Flickr[/IMG]
And after applying a wire wheel (Brass) (way out of focus but you get the drift):
[IMG]
P1010169, on Flickr[/IMG]
the fork as purchased:
[IMG]
P1000949, on Flickr[/IMG]
After a ....:
[IMG]
P1010069 , on Flickr[/IMG]